SOHC.co.uk Forums > CB500/550

What color bearing do I need?

<< < (2/8) > >>

Colonial-Clive (yindi):
Well oddjob I have just spent a hour or so with a can of brake cleaner scrubbing and cleaning the crank in the glorious sunshine and do you think I can find them there numbers can I heck so maybe I can go for brown shells and hope it all doesn't end in tears!

Mattdgray10:
Sorry but guessing isn't the way forward I had the same problem what I did was get 1 set and some plastigauge and measure them out other wise your just asking for trouble

Bryanj:
If you need black and can't get them the next size is brown so whilst it would not be ideal, according to Honda, it will run for a long time.

I have built with all black shells before now and given strict instructions to run in carefully for 2-3,000 miles with frequent oil changes and all has been OK.

You have to remember that Honda built these bikes with clearances as if they had already been run in and only needed a bit of final bedding in before thrashing mercilessly.

By the same token measuring the pins does not really work as Honda used highly accurate air gauges and if you check out the manual sizes there are several grades over a small dimension

royhall:
Buy a micrometer off eBay and measure them. Then get out the table in the workshop manual and "Bingo". Don't guess you will need to be lucky to get away with it. The markings on the crank are extremely hard to see, best way I found was to wash the crank with petrol and get it under an extremely bright light and move the crank around until you spot them (a bright sunny day is best, but you will probably have to move to Spain). It's hard but you usually end up finding them. But keep in mind the markings were the size when new, I prefer to measure them as that's the size now, including wear etc. But as Bryan says they were measured very accurately so unless your used to micrometers then stick with the markings or take it to an engineering shop for them to measure them. Good luck.

Colonial-Clive (yindi):
So today I got the crank measured and it goes thus,

From the stater 1.300
                       1.2985
                       1.3035
                       1.2995
                       1.2980

Bearing in mind (no pun intended) that the cases are stamped  AABAA  and black (A) do not exist anymore, where would you point me for the right bearings? Any help from your vast knowledge bank would be greatly appreciated.

Navigation

[0] Message Index

[#] Next page

[*] Previous page